The designment of general arrangement algorithm of seal´s circular and elliptic texts

This paper describes the design method of circle,elliptic and other types of seal, and mainly design the general arrangement algorithm for circular and elliptic texts of seal.With four big and small arcs describe ellipse frame of seal, and arrangement texts according to the equivalent chord.Firstly, calculate equivalent length and total arrangement angles of the big and small arcs, then discuss the corresponding total angles of any arc, and through the iteration revise relaxation step, precise calculate out the best text spacing.The general arrangement algorithm show very flexible and quick feature in practice which can applicable to visualization dynamic display under the mode of modify,and bear very strong practical value.